117180845 has 4 divisors (see below), whose sum is σ = 140617020. Its totient is φ = 93744672.

The previous prime is 117180839. The next prime is 117180853. The reversal of 117180845 is 548081711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78517321 + 38663524 = 8861^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 117180845 - 2⁶ = 117180781 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11718080 + ... + 11718089.

It is an arithmetic number, because the mean of its divisors is an integer number (35154255).

Almost surely, 2^117180845 is an apocalyptic number.

It is an amenable number.

117180845 is a deficient number, since it is larger than the sum of its proper divisors (23436175).

117180845 is an equidigital number, since it uses as much as digits as its factorization.

117180845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23436174.

The product of its (nonzero) digits is 8960, while the sum is 35.

The square root of 117180845 is about 10825.0101616580. The cubic root of 117180845 is about 489.3491915239.

The spelling of 117180845 in words is "one hundred seventeen million, one hundred eighty thousand, eight hundred forty-five".